Disposable wearing article

ABSTRACT

A method comprising a step of manufacturing an elastic laminated body by laminating two webs and while inserting an elastic member in an extended state in a web length direction in between; a step of cutting the elastic laminated body in a length direction so that a concave portion and a convex portion appear alternately; a step of attaching a cover sheet to bridge between the concave portion and the convex portion of cut first elastic laminated body and second elastic laminated body, respectively; a step of widening the first elastic laminated body and the second elastic laminated body to which the cover sheet is attached; and a step of attaching an absorber onto the cover sheet, lessens the occurrence of wrinkles and creases produced when webs are cut, and eliminates a problem attributed to the occurrence of wrinkles and arising when an absorber is attached.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of U.S. patent application Ser. No.10/565,151 filed on Jan. 19, 2006.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a method of continuously manufacturingdisposable wearing articles, such as disposable diapers.

2. Description of the Related Art

As is shown in FIG. 28, in the step of manufacturing disposable wearingarticles in a transverse flow state (see an arrow indicted by a capitalA), it is known to cut a web 41 in the length direction so that concaveportions 41 a and convex portions 41 b appear alternately, then widen afirst web 41A and a second web 41B, and attach absorbers 42 to bridgebetween the concave portions 41 a and the convex portions 41 b of thefirst web 41A and the second web 41B (see Japanese Unexamined PatentPublication Nos. 2002-306534 and 002-272781).

When the web 41 is cut into the first web 41A and the second web 41B,however, tension in the length direction of the web is kept applied onportions including W11, whereas tension is no longer applied on portionsincluding W12 because these portions are in open width and thereforehard to hold. This readily gives rise to wrinkles in the portionsincluding W12 (convex portions 41 b), and a problem arises whenabsorbers are attached. In a case where an elastic member is inserted inthe web 41 in the length direction of the web, a contractive force inthe length direction is induced in the portions including W12 (convexportions 41 b) after the web is cut, which gives rise to wrinkles andcreases. In particular, in a case where a leg peripheral elastic member43 is inserted in the portions (convex portions 41 b) including W12along convex portions, a contractive force is induced in a directiondifferent from the direction of the tension that is applied while theweb is transported in open width. This gives rise to more significantwrinkles and creases, and a problem arises when the absorbers areattached.

SUMMARY OF THE INVENTION

It is an object of the invention to provide a manufacturing method of adisposable wearing article that is free from the problems residing inthe prior art.

It is another object to provide a manufacturing method of a disposablewearing article that does not raise a problem attributed to theoccurrence of wrinkles when the absorber is attached by reducing theoccurrences of wrinkles and creases when the web is cut.

According to an aspect of the invention, a web is cut in a lengthdirection so that a concave portion and a convex portion appearalternately. A cover sheet or an absorber is attached to the cut firstweb and second web after or before widening the first web and the secondweb.

These and other objects, features, aspects, and advantages of thepresent invention will become more apparent from the following detaileddescription of the preferred embodiments/examples with reference to theaccompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a system view detailing the manufacturing steps of adisposable wearing article of a first embodiment, FIG. 1A being ageneral view and FIG. 1B being an enlarged view of a major portion;

FIG. 2 is a plan view showing a manufacturing status in Steps 1 through5;

FIG. 3 is a plan view showing a manufacturing status in Steps 6 through10;

FIG. 4 is a plan view showing a manufacturing status in Steps 11 through16;

FIG. 5 is an exploded perspective view of a disposable wearing article;

FIGS. 6A through 6F are cross sections of major portions showing themanufacturing status in Steps 1 through 5;

FIGS. 7A through 7F are cross sections of major portions showing themanufacturing status in Steps 6 through 10;

FIGS. 8A through 8D are cross sections of major portions showing themanufacturing status in Steps 11 through 16;

FIG. 9 shows a disposable wearing article of the first embodiment, FIG.9A being a plan view in a developed state, FIG. 9B being a schematicsectional side elevation, and FIG. 9C being a schematic sectional bottomview;

FIG. 10 shows a disposable wearing article of a first modification, FIG.10A being a plan view in a developed state and FIG. 10B being asectional side elevation;

FIG. 11 shows a disposable wearing article of a second modification,FIG. 11A being a plan view in a developed state and FIG. 11B being aschematic sectional side elevation;

FIG. 12 is a front view of the disposable wearing article of the firstembodiment in a fabricated state;

FIG. 13 is a plan view showing an attachment state of an elastic memberin an elastic laminated body and a cutting line;

FIG. 14A is a plan view showing an attachment state of an elastic memberin an elastic laminated body of a first modification and a cutting line,and FIG. 14B is a plan view showing an attachment state of an elasticmember in an elastic laminated body of a second modification and acutting line;

FIG. 15 is a system view detailing the manufacturing steps of adisposable wearing article of a second embodiment;

FIG. 16 is a plan view showing a manufacturing status in major steps;

FIG. 17 is a disposable wearing article of the second embodiment, FIG.17A being a plan view in a developed state and FIG. 17B being aschematic sectional side elevation;

FIG. 18 is a plan view showing a manufacturing status in major steps ofa disposable wearing article of a third embodiment;

FIG. 19 shows a disposable wearing article of the third embodiment, FIG.19A being a plan view in a developed state and FIG. 19B being aschematic sectional side elevation;

FIG. 20 is a system view detailing the manufacturing steps of adisposable wearing article of a fourth embodiment;

FIG. 21 is a plan view showing a manufacturing status in major steps;

FIG. 22 shows a disposable wearing article of the fourth embodiment,FIG. 22A being a plan view in a developed state and FIG. 22B being aschematic sectional side elevation;

FIG. 23 shows a disposable wearing article of a first modification, FIG.23A being a plan view in a developed state, FIG. 23B being a schematicsectional side elevation, and FIG. 23C being a schematic sectional frontview;

FIG. 24 is a plan view of a disposable wearing article of a secondmodification in a developed state;

FIG. 25 is a system view detailing the manufacturing steps of adisposable wearing article of a fifth embodiment;

FIG. 26 is a plan view showing a manufacturing status in major steps;

FIG. 27 shows a disposable wearing article of the fifth embodiment, FIG.27A being a plan view in a developed state, FIG. 27B being a schematicsectional side elevation, and FIG. 27C being a schematic sectionalbottom view; and

FIG. 28 is a plan view showing a manufacturing status in major steps ofa disposable wearing article in the related art.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, best modes for carrying out the invention will be describedin detail with reference to the drawings.

First Embodiment

FIG. 1 through FIG. 14 show a disposable wearing article 1A of a firstembodiment and a manufacturing method of the same.

FIG. 9 shows a state where the disposable wearing article 1A isdeveloped. FIG. 9A is a plan view, FIG. 9B is a schematic sectional sideelevation, and FIG. 9C is a schematic sectional bottom view. FIG. 12 isa front view of the disposable wearing article 1A in a fabricated state.

As is shown in FIG. 9, the disposable wearing article 1A includes acover sheet 2 attached to bridge between a front portion (first elasticlaminated body 12A) P and a back portion (second elastic laminated body12B) Q, and an absorber 3 is attached onto the cover sheet 2. The frontportion P and the back portion Q are placed one on the other by foldingthe absorber 3 inward with the cover sheet 2 on the outside, and anarticle of an underpants type as is shown in FIG. 12 is fabricated byside-sealing the both side portions 1 a of the front portion P and theback portion Q. The both side portions 1 a may not be side-sealed, andinstead, the both side portions 1 a may be stopped in anattachable/detachable manner using a stopper tape or the like, so thatan article of a tape type is obtained.

In the disposable wearing article 1A, a crotch portion R is defined bythe absorber 3 and leg opening portions S are formed on the both sidesof the absorber 3.

The manufacturing method of the disposable wearing article 1A of thefirst embodiment will now be described with reference to FIG. 1 throughFIG. 8.

(1) Steps 1 through 5 show a step of manufacturing the first elasticlaminated body 12A on the front portion P side and the second elasticlaminated body 12B on the back portion Q side from an elastic laminatedbody 12 in a transverse flow state, and then attaching the cover sheet2.

[Step 1] Referring to FIG. 1, FIG. 2, and FIG. 6, the elastic laminatedbody 12 is manufactured by bonding an outer surface web 10 and an innersurface web 11 that are made of non-woven fabric and fed continuously ina length direction A while inserting body-fitting elastic members 4 andleg peripheral elastic members 5A and 5B on the front portion P side andthe back portion Q side in an extended state in the length direction Ain between (see FIGS. 6A through 6C). By taking displacement in width atthe time of bonding into account, it is preferable to set a breadth W2of the inner surface web 11 narrower than a breadth W1 of the outersurface web 10.

The leg peripheral elastic member 5A and the body-fitting elastic member4 are attached linearly in the length direction A, whereas the legperipheral elastic member 5B is attached in a curved line to go alongthe concave portion 12 b that will be described below.

For example, a hot melt adhesive is applied on at least one of the webs10 and 11, so that these webs 10 and 11 are bonded to each other whilethe body-fitting elastic member 4 and the leg peripheral elastic members5A and 5B are inserted in between.

Polyurethane, natural rubber, heat curable resin, etc. can be used asmaterials of the body-fitting elastic member 4 and the leg peripheralelastic members 5A and 5B. These members can be of a thread shape or aribbon shape. Also, the number of each member is not limited to one, andeach member may be made of more than one thread or ribbon. In a casewhere heat curable resin is used as the material, when the heat curableresin itself has a capability of bonding the webs 10 and 11, the hotmelt adhesive may be omitted. It should be noted that the samedescription applies to materials and shapes of elastic members 5C, 6,and 7 described below.

[Step 2] The elastic laminated body 12 is cut into the first elasticlaminated body 12A and the second elastic laminated body 12B in thelength direction A so that concave portions 12 a and convex portions(leg peripheral flap portions) 12 b appear alternately in Step 3described in the following. In preceding Step 2, portions 12 c wherecontractive forces are lessened are formed by applying treatment tolessen contractive forces of the body-fitting elastic members 4 and theleg peripheral elastic members 5A and 5B in the concave portions 12 aand the convex portions 12 b on the second elastic laminated body 12Bside.

As the treatment to lessen contractive forces, for example, a method offusing the body-fitting elastic member 4 and the leg peripheral elasticmembers 5A and 5B using an embossed roll (heat embossing) (seeJP-A-2002-113042), or a method of cutting the body-fitting elasticmember 4 and the leg peripheral elastic members 5A and 5B using a gathercutter 14 (see FIG. 1) can be adopted. It is preferable to fuse or cutthese members while the elastic laminated body 12 placed along the rollis drawn in vacuum. The step of lessening contractive forces can beperformed at any timing before Step 11 of attaching the absorber 3described below.

[Step 3] The first elastic laminated body 12A and the second elasticlaminated body 12B are manufactured by cutting the elastic laminatedbody 12 in the length direction A using an S-cutter 15 (so-calledS-cutting, see a cutting line C), so that the concave portions 12 a andthe convex portions 12 b appear alternately in the elastic laminatedbody 12 (see FIG. 6D). The cutting may be made in the form of aperforated line so that laminated bodies can be separated at the time ofwidening described below.

As is shown in FIG. 13, when the elastic laminated body 12 is cut intothe first elastic laminated body 12A and the second elastic laminatedbody 12B by the S-cutting (see the cutting line C), circular arcportions indicated by hatching a are left on the both sides of the firstelastic laminated body 12A. These circular arc portions may be leftintact or may be cut off from the design consideration. FIG. 9 throughFIG. 12 show the disposable wearing article 1A of an underpants typewith these portions being cut off.

A length W8 of the elastic laminated body 12A in the width direction maybe extended. In such a case, the raise length can be extended, which canin turn increase the commercial value.

[Step 4] The liquid-impermeable cover sheet 2 continuously fed in thelength direction A is folded in the shape of Ω by providing slackcomparable to the widening described below, and then cut in a specificwidth W3 (see FIG. 2) using cut and place rollers 20 (A and B). Thecover sheet 2 thus cut is bonded to bridge between the inner surfacewebs 11 on the concave portion 12 a and the convex portion 12 b of thefirst elastic laminated body 12A and the second elastic laminated body12B, respectively (see FIG. 6E).

It is preferable to bond the cover sheet 2 to the inner surface webs 11when wrinkles are hardly produced in the convex portion 12 b of thesecond elastic laminated body 12B, and it is particularly preferable toperform bonding immediately after the cutting in Step 3.

As is shown in FIG. 1B, it is preferable that the cover sheet 2 foldedin the shape of Ω is cut by the cut roller 20A, then transported on theplace roller 20B, and bonded to bridge between the inner surface webs 11on the concave portion 12 a and the convex portion 12 b of the firstelastic laminated body 12A and the second elastic laminated body 12B,respectively, on a back sheet lamination drum 50.

The cover sheet 2 can be hydrophobic non-woven fabric, such as PP andPE.

For the cover sheet 2, the width W3 is set to be almost equal to that ofthe absorber 3 and the length is set shorter than that of the absorber3. By taking into account displacement in width caused when the absorber3 is attached, it is preferable in practice to set the width W3 of thecover sheet 2 about 6 to 13% wider.

[Step 5] The cut first elastic laminated body 12A and second elasticlaminated 12B are widened by a specific interval W4 in the widthdirection W (see FIG. 6F). The cover sheet 2 is thus expanded to be flatand bridge between the concave portions 12 a and the convex portions 12b of the first elastic laminated body 12A and the second elasticlaminated body 12B, respectively.

(2) Step 6 through Step 10 show one example of a step of manufacturingthe absorber 3.

[Step 6] Referring to FIG. 1, FIG. 3, and FIG. 7, a sheet for risingflaps 8 that is made of non-woven fabric and fed continuously in thelength direction A is cut in the length direction A by a slitter 16 (seeFIG. 7A). The cut rising flaps 8 are widened by a specific interval W5in the width direction W (see FIG. 7B). Subsequently, a flap elasticmember 7 in an extended state in the length direction A is inserted andbonded to the interior of an incurved portion 8 a of each rising flap 8curled inwardly using a sailor 28 (see FIGS. 7C and 7D). Subsequently,rear anchor portions 8 b of the rising flaps 8 are bonded to the bothside portions of a top sheet 9A that is made of liquid-permeablenon-woven fabric and fed continuously in the length direction A (seeFIG. 7E).

[Step 7] A core 3 a of the absorber 3 is molded in a longitudinal flowstate by laminating fibrillated fluff made by pulverizing a roll pulp 17using a pulverizer 18 on a pattern drum 19. The fluff may be mixed withsuper absorbent polymer.

[Step 8] Leg peripheral elastic members 5C in an extended state in thelength direction A are attached along the both side portions of a backsheet 9B that is made of non-woven fabric and fed continuously in thelength direction A while a liquid-impermeable synthetic resin film 9 bis bonded to the back surface.

In this embodiment, because the cover sheet 2 can be used as thenon-woven fabric back sheet, the back sheet 9B may be made of only aliquid-impermeable waterproof film, such as a polyethylene film, in thisstep. In such a case, the leg peripheral elastic members are alsoattached along the both side portions in the same manner.

[Step 9] The absorber 3 in a lengthy state in the length direction A ismanufactured by placing the core 3 a on the back sheet 9B manufacturedin Step 8, and bonding the top sheet 9A manufactured in Step 6 to theback sheet 9B with a hot melt adhesive or the like while the core 3 aand the leg peripheral elastic members 5C are inserted in between (seeFIG. 7F).

As the liquid-impermeable sheet, a polyethylene film or a water-sheddingor breathable non-woven fabric is preferable. As the liquid-permeablesheet, a liquid-permeable non-woven fabric or a mesh sheet ispreferable.

[Step 10] The absorber 3 of a rectangular shape is manufactured bycutting the absorber 3 in a lengthy state in the length direction Atogether with the rising flaps 8 at every specific length using aninterior cutter 21.

A transfer sheet 29 (see FIG. 9) may be interposed between the core 3 aand the top sheet 9A. The transfer sheet 29 diffuses urine or the likequickly and prevents leakage of absorbed urine or the like from the topsheet 9A.

In a case where the core 3 a is molded by mixing the super absorbentpolymer with the fluff, it is possible to prevent the super absorbentpolymer from coming out from the fluff by sandwiching the core 3 abetween two sheets of tissue paper or wrapping the core 3 a in a singlesheet of tissue paper.

(3) Step 11 through Step 16 show a step of fabricating the disposablewearing article 1A in a transverse flow state.

[Step 11] Referring to FIG. 1, FIG. 4, and FIG. 8, as with the firstelastic laminated body 12A and the second elastic laminated body 12B ina transverse flow state manufactured in Step 5, the absorber 3manufactured in Step 10 is brought into a transverse flow state by beinginverted by 90 degrees using an interior turn drum 23 (see the left endof FIG. 3), and the absorber 3 is bonded onto the cover sheet 2 bondedto bridge between the first elastic laminated body 12A and the secondelastic laminated body 12B, and is also bonded to bridge between theinner surface webs 11 on the concave portion 12 a and the convex portion12 b of the first elastic laminated body 12A and the second elasticlaminated body 12B, respectively (see FIG. 8A). In this case, theabsorber 3 is bonded across the portion 12 c where contractive forces ofthe concave portion 12 a and the convex portion 12 b are lessened.

[Step 12] Waist elastic members 6 in an extended state in the lengthdirection A are placed along the both end portions 12 d of the firstelastic laminated body 12A and the second elastic laminated body 12B inthe width direction (a direction crossing with the length direction A) Won the outer surface web 10 side. The both end portions 12 d are foldedinward, so that the absorber 3 is bonded to the inner side of the bothend portions 12 d while the waist elastic members 6 are inserted inbetween (see FIGS. 8B and 8C). In order to prevent the fluff or the likefrom coming out from the end portions of the absorber 3 and/or leakageof absorbed urine or the like, it is preferable to bond the both endportions 12 d to cover the top and bottom end portions of the absorber3.

Subsequently, the leg hole portions S as described below may be formedby cutting out the first elastic laminated body 12A and the secondelastic laminated body 12B using a trim cutter (not shown). Further, theboth edge portions of the cover sheet may be cut off or the both edgeportions of the absorber 3 may be cut off.

[Step 13] The first elastic laminated body 12A and the second elasticlaminated body 12B are placed one on the other by folding the absorber 3inward with the cover sheet 2 on the outside using a doubling device 24(see FIG. 8D).

[Step 14] The intermediate position (equivalent to the both sideportions 1 a of the disposable wearing article 1A) of the absorber 3adjacent to the first elastic laminated body 12A and the second elasticlaminated body 12B placed one on the other is side-sealed by fusing heatseals 25 a through 25 c in several steps. The heat seals 25 a through 25c are not necessarily in the several steps. Instead of using the heatseals 25 a through 25 c, the side-sealing may be performed using sonic.

[Step 15] The disposable wearing article 1A with the both side portions1 a being side-sealed can be achieved by cutting the intermediateportion in the side-sealed portions of the first elastic laminated body12A and the second elastic laminated body 12B using a product cutter 26.

[Step 16] The disposable wearing article 1A as the product is invertedby 90 degrees by a product inverting device 27, and transported to aproduct inspection step and to a packing step.

According to the manufacturing method of the disposable wearing article1A of the first embodiment, the elastic laminated body 12 ismanufactured by bonding the two webs 10 and 11 while inserting theelastic members 4, 5A, and 5B in between. The elastic laminated body 12is then cut in the length direction A so that the concave portions 12 aand the convex portions 12 b appear alternately. After the cover sheet 2is bonded to bridge between the concave portion 12 a and the convexportion 12 b of the cut first elastic laminated body 12A and secondelastic laminated body 12B, respectively, the first elastic laminatedbody 12A and the second elastic laminated body 12B are widened. Theabsorber 3 is then attached onto the cover sheet 2.

The cover sheet 2 is therefore bonded to bridge between the firstelastic laminated body 12A and the second elastic laminated body 12B notafter the widening when wrinkles are readily produced in the elasticlaminated body 12, but before the widening when wrinkles are hardlyproduced, more specifically, immediately after the cutting. It is thuspossible to avoid a problem attributed to wrinkles and arising when theabsorber 3 is attached.

Also, the method of the invention is particularly effective in a casewhere the wrinkles and/or creases are more readily produced as describedabove, for example, in a case where the leg peripheral elastic member 5Bis inserted in the convex portion 12 b.

In addition, the bonding can be readily performed by bonding the coversheet 2 provided with slack comparable to the widening to bridge betweenthe first elastic laminated body 12A and the second elastic laminatedbody 12B. A stretchable sheet may be used as the cover sheet 2. In sucha case, a stretchable absorber 3 can be used, which can in turn improvethe feeling of fitness of the wearer.

Further, by setting the width W3 of the cover sheet 2 to be almost equalto that of the absorber 3 and by setting the length shorter than that ofthe absorber 3, the material costs can be saved in comparison with amanufacturing method of manufacturing the cover sheet 2 integrally withthe absorber 3. By taking into account displacement in width caused whenthe absorber is attached, it is preferable in practice to set the widthW3 of the cover sheet 2 about 6 to 13% wider.

Also, by making the cutting in the elastic laminated body 12 in the formof a perforated line so that the laminated bodies can be separated atthe time of widening, it is possible to forestall a problem thatwrinkles are readily produced at the same time instant the cutting isperformed.

Furthermore, by attaching the waist elastic members 6, the body-fittingelastic member 4, and the leg peripheral elastic member 5A and 5B to thefirst elastic laminated body 12A and the second elastic laminated body12B, it is possible to prevent the disposable wearing article 1A put onthe wearer from drooping down by the waist elastic member 6, while thedisposable wearing article 1A can be fit to the body by the body-fittingelastic members 4 and the adhesion to the leg portions can be enhancedby the leg peripheral elastic members 5A and 5B.

Also, by side-sealing the both side portions 1 a of the first elasticlaminated body 12A and the second elastic laminated body 12B while theabsorber 3 is in a folded state, it is possible to achieve a wearingarticle of an underpants type.

In the first embodiment, the cover sheet 2 is bonded to bridge betweenthe first elastic laminated body 12A and the second elastic laminatedbody 12B obtained by cutting the elastic laminated body 12 manufacturedby bonding the two webs 10 and 11 while inserting the elastic members 4,5A, and 5B in between. However, the cover sheet 2 may be bonded tobridge between a first web and a second web obtained by cutting a singleweb 11. It should be noted that the waist elastic member 6 that has noinfluence on the occurrence of wrinkles can be attached.

In such a case, because the cover sheet 2 is bonded to bridge betweenthe first web and the second web not after the widening when wrinklesare readily produced, but before the widening when wrinkles are hardlyproduced, more specifically, immediately after the cutting, it ispossible to avoid a problem attributed to wrinkles and arising when theabsorber 3 is attached.

In the disposable wearing article 1A of the first embodiment, as areshown in FIG. 9A and FIG. 13, the leg peripheral elastic member 5B onthe second elastic laminated body 12B (back portion Q) side is attachedin a curved line state b in the width direction of the wearing article.However, as are shown in FIG. 10 and FIG. 14A, the leg peripheralelastic member 5B can be attached to include both the curved line stateb and a linear state c in the width direction of the wearing article.

Also, as are shown in FIG. 11 and FIG. 14B, the leg peripheral elasticmember 5B can be attached in the linear state c in the width directionof the wearing article. The body-fitting elastic member 4 may beattached to the first elastic laminated body 12A (front portion P).

Second Embodiment

FIG. 15 through FIG. 17 show a manufacturing method of a disposablewearing article 1B of a second embodiment.

In comparison with the disposable wearing article 1A of the firstembodiment, the disposable wearing article 1B of the second embodimentis different in that the cover sheet 2 is omitted.

The manufacturing method of the disposable wearing article 1B of thesecond embodiment will now be described in points different from themanufacturing method of the disposable wearing article 1A of the firstembodiment.

In the step of manufacturing the first elastic laminated body 12A on thefront portion P side and the second elastic laminated body 12B on theback portion Q side in a transverse flow state (see Steps 1 through 5 ofFIG. 1), the outer surface web 10 that is made of non-woven fabric andfed continuously in the length direction A is cut in the lengthdirection A using the slitter 16 (see a cutting line D). Cut first outersurface web 10A and second outer surface web 10B are widened by aspecific interval W6 in the width direction W.

Also, the inner surface web 11 that is made of non-woven fabric and fedcontinuously in the length direction A is cut in the length direction Ausing the S-cutter 15 so that the concave portions 12 a and the convexportions 12 b appear alternately (so-called S-cutting, see the cuttingline C). Cut first inner surface web 11A and second inner surface web11B are widened by a specific interval W6 in the width direction W, andare shifted in the length direction A by a phase matching device 13 sothat the concave portions 12 b of the respective webs 11A and 11B opposeeach other.

The phase matching can be performed after the first outer surface web10A and the first inner surface web 11A are bonded, after the secondouter surface web 10B and the second inner surface web 11B are bonded(see Step 1 of FIG. 1), or after the portion 12 c where contractiveforces are lessened is formed (see Step 2 of FIG. 1). In other words,the phase matching can be performed at any timing from the widening stepto the bonding step of the absorber 3. However, when it is performedafter the bonding step, both the webs 10A and 11A and the webs 10B and11B become firm, they can be handled more readily. It should be noted,however, that the phase matching can be omitted as in the firstembodiment.

Subsequently, the first elastic laminated body 12A on the front portionP side and the second elastic laminated body 12B on the back portion Qside are manufactured by bonding the first outer surface web 10A to thefirst inner surface web 11A and the second outer surface web 10B to thesecond inner surface web 11B, all of which are cut and widened, whileinserting the body-fitting elastic members 4 on the front portion P sideand the back portion Q side in an extended state in the length directionA in between. The second outer surface web 10B and the second innersurface web 11B may be bonded while inserting the leg peripheral elasticmember 5B in between.

Meanwhile, in the step of fabricating the disposable wearing article 1Bin a transverse flow state (see Steps 11 through 16 of FIG. 1), theabsorber 3 is bonded across the portion 12 c where contractive forces atthe convex portions 12 b of the inner surface webs 11 in the firstelastic laminated body 12A and the second elastic laminated body 12B arelessened.

Subsequently, the leg hole portions S are formed by cutting out theouter surface web 10 using a trim cutter 22 provided between Step 12 andStep 13.

In this embodiment, the outer surface web 10 alone is cut out using thetrim cutter 22. However, the inner surface web 11 may be cut out aswell, or alternatively, the both edge portions of the absorber 3 may becut off together with the outer surface web 10 and the inner surface web11.

According to the manufacturing method of the disposable wearing article1B of the second embodiment, the outer surface web 10 is cut in thelength direction A, and the cut first outer surface web 10A and secondouter surface web 10B are widened. Meanwhile, the inner surface web 11is cut in the length direction A so that the concave portions 12 a andthe convex portions 12 b appear alternately, and the cut first innersurface web 11A and second inner surface web 11B are widened followed bythe phase matching. After the first elastic laminated body 12A and thesecond elastic laminated body 12B are manufactured by bonding the firstouter surface web 10A to the first inner surface web 11A and the secondouter surface web 10B to the second inner surface web 11B whileinserting the body-fitting elastic members 4 in between, the absorber 3is bonded to bridge between the convex portions 12 b of the first innersurface web 11A and the second inner surface web 11B.

The outer surface web 10 is therefore in a seamless state in theconstant width in the width direction, and transported in open widthwhile tension in the length direction is kept applied. The outer surfaceweb 10 therefore has a resistance against contraction of thebody-fitting member 4 inserted between the self and the inner surfaceweb 11. Hence, the occurrence of wrinkles in the convex portions 12 b ofthe manufactured first elastic laminated body 12A and second elasticlaminated body 12B can be suppressed in comparison with a case whereboth the outer surface web 10 and the inner surface web 11 have theconcave portion and the convex portion. It is thus possible to avoid aproblem attributed to the occurrence of wrinkles when the absorber 3 isattached to bridge between the convex portions 12 b of the first innersurface web 11A and the second inner surface web 11B.

The method of the invention is particularly effective in a case wherethe wrinkles and/or creases are readily produced as described above, forexample, when the leg peripheral elastic member 5B is inserted in theconvex portion 12 b.

In addition, because the cover sheet 2 used in the first embodiment canbe omitted, the cost can be saved.

Further, by shifting the cut first inner surface web 11A and secondinner surface web 11B in the length direction so that the convexportions 12 b of the respective webs 11A and 11B oppose each other, itis possible to bond the absorber 3 to bridge between the convex portions12 b of the first elastic laminated body 12A and the second elasticlaminated body 12B. This configuration makes it possible to bond theabsorber 3 to the convex portions 12 b of a large space, which enablesthe bonding to be performed in a reliable manner.

In addition, because part of the absorber 3 can be covered with theconvex portions 12 b of both the first elastic laminated body 12A andthe second elastic laminated body 12B, the wearing article can beapproximated to underpants in shape. The visual quality can be thereforeimproved, which can in turn increase the commercial value of thedisposable wearing article 1B.

Third Embodiment

FIG. 18 and FIG. 19 show a manufacturing method of a disposable wearingarticle 1C of the third embodiment.

In comparison with the disposable wearing article 1B of the secondembodiment, the disposable wearing article 1C of the third embodiment isdifferent in that the outer surface web 10 is neither cut nor widened.

The manufacturing method of the disposable wearing article 1C of thethird embodiment will now be described in points different from themanufacturing method of the disposable wearing article 1B of the secondembodiment.

Referring to FIG. 15 of the second embodiment again, the step of cuttingand widening the outer surface web 10 (see a portion indicated by acapital F) and the step of bonding the film 9 b of the back sheet 9B(see a portion indicated by a capital G) can be omitted.

In other words, the inner surface web 11 that is made of non-wovenfabric and fed continuously in the length direction A is cut in thelength direction A using the S-cutter 15 so that the concave portions 12a and the convex portions 12 b appear alternately (so-called S-cutting,see the cutting line C), and the cut first inner surface web 11A andsecond inner surface web 11B are widened by a specific interval W6 inthe width direction W while being shifted in the length direction A bythe phase matching device 13 so that the convex portions 12 b of therespective webs 11A and 11B oppose each other. It should be noted,however, that the phase matching can be omitted as in the firstembodiment.

The outer surface web 10 that is made of non-woven fabric set to have abreadth W7 in a widened state and fed continuously in the lengthdirection A is bonded to the first inner surface web 11A and the secondinner surface web 11B while inserting the body-fitting elastic members 4on the front portion P side and the back portion Q side in an extendedstate in the length direction A in between. The first elastic laminatedbody 12A on the front portion P side and the second elastic laminatedbody 12B on the back portion Q side are thus manufactured while beingconnected via the outer surface web 10. The outer surface web 10 may bebonded to the second inner surface web 11B while inserting the legperipheral elastic member 5B in between.

Meanwhile, in the step of fabricating the disposable wearing article 1Cin a transverse flow state (see Steps 11 through 16 of FIG. 1), theabsorber 3 is bonded not only across the portion 12 c where contractiveforces at the convex portions 12 b of the inner surface webs 11 in thefirst elastic laminated body 12A and the second elastic laminated body12B are lessened, but also onto the seamless outer surface web 10.

Subsequently, the leg hole portions S are formed by cutting out theouter surface web 10 using the trim cutter 22 provided between Step 12and Step 13.

In this embodiment, the outer surface web 10 alone is cut out using thetrim cutter 22. However, the inner surface web 11 may be cut out aswell, or alternatively, the both edge portions of the absorber 3 may becut off together with the outer surface web 10 and the inner surface web11.

According to the manufacturing method of the disposable wearing article1C of the third embodiment, the inner surface web 11 is cut in thelength direction A so that the concave portions 12 a and the convexportions 12 b appear alternately, and the cut first inner surface web11A and second inner surface web 11B are widened. Meanwhile, after thefirst elastic laminated body 12A and the second elastic laminated body12B connected via the outer surface web 10 are manufactured by bondingthe outer surface web 10 that is set to have the breadth W7 in a widenedstate is bonded to the first inner surface web 11A and to the secondinner surface web 11B while inserting the body-fitting elastic members 4in between, the absorber 3 is bonded to bridge between the convexportions 12 b of the first inner surface web 11A and the second innersurface web 11B.

The outer surface web 10 is therefore neither cut nor widened, andtransported in open width while tension in the length direction is keptapplied. The outer surface web 10 thus has a resistance against thecontraction of the body-fitting elastic members 4 inserted between theself and the inner surface web 11. It is thus possible to avoid aproblem attributed to the occurrence of wrinkles and arising when theabsorber is attached to bridge between the convex portions 12 b of thefirst inner surface web 11A and the second inner surface web 11B.

When the absorber 3 is bonded to bridge between the first inner surfaceweb 11A and the second inner surface web 11B that are cut and widened,trim losses in the webs 10 and 11 are hardly produced during themanufacturing steps. It is thus possible to reduce the manufacturingcosts of the disposable wearing article 1C.

The method of the invention is particularly effective in a case wherethe wrinkles and/or creases are readily produced as described above, forexample, when the leg peripheral elastic member 5B is inserted in theconvex portion 12 b.

Further, because the cover sheet 2 used in the first embodiment can beomitted, the cost can be saved.

Furthermore, because the intermediate portion of the absorber 3 can becovered with the seamless outer surface web 10, the visual quality isincreased.

Fourth Embodiment

FIG. 20 through FIG. 24 show a manufacturing method of a disposablewearing article 1D of a fourth embodiment.

In comparison with the disposable wearing article 1B of the secondembodiment, the disposable wearing article 1D of the fourth embodimentis different in that the inner surface web is not S-cut.

The manufacturing method of the disposable wearing article 1D of thefourth embodiment will now be described in points different from themanufacturing method of the disposable wearing article 1B of the secondembodiment.

As are shown in FIG. 20 through FIG. 22, in the step of manufacturingthe first elastic laminated body 12A on the front portion P side and thesecond elastic laminated body 12B on the back Q side in a transverseflow state (see Steps 1 through 5 of FIG. 1), the elastic laminated body12 is manufactured by bonding the outer surface web 10 and the innersurface web 11 that are fed continuously in the length direction A whileinserting the body-fitting elastic members 4 and the leg peripheralelastic members 5A and 5B on the front portion P side and the backportion Q side in an extended state in the length direction A inbetween.

The elastic laminated body 12 is cut in the length direction A using theslitter 16 (see the cutting line D), and the cut first elastic laminatedbody 12A and second elastic laminated body 12B are widened by a specificinterval W6 in the width direction W.

Meanwhile, in the step of fabricating the disposable wearing article 1Cin a transverse flow state (see Steps 11 through 16 of FIG. 1), theabsorber 3 is bonded across the portion 12 c where contractive forces ofthe inner surface webs 11 in the first elastic laminated body 12A andthe second elastic laminated body 12B are lessened.

Subsequently, the leg hole portions S are formed by cutting out thefirst elastic laminated body 12A and the second elastic laminated body12B using the trim cutter 22 provided between Step 12 and Step 13. Theboth edge portions of the absorber 3 may be also cut off.

According to the manufacturing method of the disposable wearing article1D of the fourth embodiment, the leg hole portions S are cut out afterthe absorber 3 is bonded to bridge between the widened first elasticlaminated body 12A and second elastic laminated body 12B. The absorber 3can be therefore provided in the absence of a problem attributed tooccurrence of wrinkles as described above.

As is shown in FIG. 23, leg peripheral elastic members 5C that crosswith the leg peripheral elastic member 5A on the front portion P sideand the leg peripheral elastic member 5B on the back portion Q side maybe attached to the absorber 3. Also, as is shown in FIG. 24, the legperipheral elastic member 5B on the back portion Q side may be attachedin a curved line along the back edge portion of the back portion Qinstead of being attached linearly.

Fifth Embodiment

FIG. 25 through FIG. 27 show a manufacturing method of a disposablewearing article 1E of a fifth embodiment.

In comparison with the disposable wearing article 1B of the secondembodiment, the disposable wearing article 1E of the fifth embodiment isdifferent in that the inner surface web is not S-cut.

The manufacturing method of the disposable wearing article 1E of thefifth embodiment will now be described in points different from themanufacturing method of the disposable wearing article 1B of the secondembodiment.

The inner surface web 11 that is made of non-woven fabric and fedcontinuously in the length direction A is cut in the length direction A(see the cutting line D) using the slitter 16, and the cut first innersurface web 11A and second inner surface web 11B are widened by aspecific interval W6 in the width direction W.

The outer surface web 10 that is made of non-woven fabric set to have abreadth W7 in a widened state and fed continuously in the lengthdirection A is bonded to the first inner surface web 11A and to thesecond inner surface web 11B while inserting the body-fitting elasticmembers 4 and the leg peripheral elastic members 5A and 5B on the frontportion P side and the back portion Q side in an extended state in thelength direction A in between. The first elastic laminated body 12A onthe front portion P side and the second elastic laminated body 12B onthe back portion Q side are thus manufactured while being connected viathe outer surface web 10.

Meanwhile, in the step of fabricating the disposable wearing article 1Ein a transverse flow state (see Steps 11 through 16 of FIG. 1), theabsorber 3 is bonded not only across the portion 12 c where contractiveforces of the inner surface webs 11 in the first elastic laminated body12A and the second elastic laminated body 12B are lessened, but alsoonto the seamless outer surface web 10.

Subsequently, the leg hole portions S are formed by cutting out thefirst elastic laminated body 12A and the second elastic laminated body12B using the trim cutter 22 provided between Step 12 and Step 13. Theboth edge portions 3 b of the absorber 3 are also cut off using the trimcutter 22 in this embodiment.

According to the manufacturing method of the disposable wearing article1E of the fifth embodiment, the leg hole portions S are cut out afterthe absorber 3 is bonded to bridge between the first elastic laminatedbody 12A and second elastic laminated body 12B connected via the outersurface web 10. The absorber 3 can be therefore provided in the absenceof a problem attributed to the occurrence of wrinkles as describedabove.

As described above, a first manufacturing method comprises steps of:cutting a web in a length direction so that a concave portion and aconvex portion appear alternately; attaching a cover sheet to bridgebetween cut first web and second web; widening the first web and thesecond web to which the cover sheet is attached; and attaching anabsorber onto the cover sheet.

According to the first manufacturing method, the web is cut in thelength direction so that the concave portion and the convex portionappear alternately, and the cover sheet is attached to bridge betweenthe cut first web and second web, after which the first web and thesecond web are widened. The absorber is then attached onto the coversheet.

By attaching the cover sheet to bridge between the first web and thesecond web not after the widening when wrinkles are readily produced,but before the widening when wrinkles are not readily produced,preferably, after the cutting when wrinkles are hardly produced, andmore preferably, immediately after the cutting, the occurrence ofwrinkles particularly in the convex portion can be eliminated. It isthus possible to avoid a problem attributed to wrinkles and arising whenthe absorber is attached.

A second manufacturing method comprises steps of: manufacturing anelastic laminated body by laminating two webs while inserting an elasticmember in an extended state in a web length direction in between;cutting the elastic laminated body in a length direction so that aconcave portion and a convex portion appear alternately; attaching acover sheet to bridge between the concave portion and the convex portionof cut first elastic laminated body and second elastic laminated body,respectively; widening the first elastic laminated body and the secondelastic laminated body to which the cover sheet is attached; andattaching an absorber onto the cover sheet.

According to the second manufacturing method, after the elasticlaminated body is manufactured by laminating the two webs whileinserting the elastic member in between, the elastic laminated body iscut in the length direction so that the concave portion and the convexportion appear alternately. After the cover sheet is attached to bridgebetween the concave portion and the convex portion of the cut firstelastic laminated body and second elastic laminated body, respectively,the first elastic laminated body and the second elastic laminated bodyare widened. The absorber is then attached onto the cover sheet.

By attaching the cover sheet to bridge between a first belt member and asecond belt member not after the widening when wrinkles are readilyproduced, but before the widening when wrinkles are not readilyproduced, preferably, after the cutting when wrinkles are hardlyproduced, and more preferably, immediately after the cutting, it ispossible to avoid a problem attributed to wrinkles and arising when theabsorber is attached.

Further, this method is particularly effective in a case where a legperipheral elastic member is inserted in the convex portion, because theoccurrence of wrinkles or creases can be suppressed as much as possible.

In the first and second manufacturing method, it is preferable that thecover sheet is provided with slack comparable to widening when attachedto bridge between the webs or between the concave and convex portions.

When the cover sheet is attached to bridge between the webs or betweenthe concave and convex portions with slack comparable to the widening,the attachment can be performed with ease.

A third manufacturing method comprises steps of: cutting an outersurface web in a length direction; widening cut first outer surface weband second outer surface web; cutting an inner surface web in a lengthdirection so that a concave portion and a convex portion appearalternately; widening cut first inner surface web and second innersurface web; manufacturing a first elastic laminated body and a secondelastic laminated body by laminating the first outer surface web to thefirst inner surface web and the second outer surface web to the secondinner surface web while inserting an elastic member in an extended statein a web length direction in between; and attaching an absorber tobridge between the first inner surface web and the second inner surfaceweb.

According to the third manufacturing method, the outer surface web iscut in the length direction and the cut first outer surface web andsecond outer surface web are widened. Meanwhile, the inner surface webis cut in the length direction so that the concave portion and theconvex portion appear alternately, and the cut first inner surface weband second inner surface web are widened. After the first elasticlaminated body and the second elastic laminated body are manufactured bylaminating the first outer surface web to the first inner surface weband the second outer surface web to the second inner surface web whileinserting the elastic member in between, the absorber is attached tobridge between the first inner surface web and the second inner surfaceweb.

The outer surface web is therefore in a seamless state in the constantwidth in the width direction, and transported in open width whiletension in the length direction is kept applied. The outer surface webthus has a resistance against contraction of the elastic member insertedbetween the self and the inner surface web. Hence, the occurrence ofwrinkles in the first elastic laminated body and the second elasticlaminated body thus manufactured can be suppressed in comparison with acase where both the outer surface web and the inner surface web have theconcave portions and the convex portions. It is thus possible to avoid aproblem attributed to the occurrence of wrinkles and arising when theabsorber is attached to bridge between the convex portions of the firstinner surface web and the second inner surface web.

Further, this method is particularly effective in a case where a legperipheral elastic member is inserted in the convex portion, because theoccurrence of wrinkles or creases can be suppressed as much as possible.

A fourth manufacturing method comprises steps of: cutting an innersurface web in a length direction so that a concave portion and a convexportion appear alternately; widening cut first inner surface web andsecond inner surface web; laminating an outer surface web to the firstinner surface web and to the second inner surface web while inserting anelastic member in an extended state in a web length direction inbetween; and attaching an absorber to bridge between the first innersurface web and the second inner surface web.

According to the fourth manufacturing method, the inner surface web iscut in the length direction so that the concave portion and the convexportion appear alternately, and the cut first inner surface web andsecond inner surface web are widened. After the first elastic laminatedbody and the second elastic laminated body are manufactured bylaminating the outer surface web to the first inner surface web and tothe second inner surface web while inserting the elastic member inbetween, the absorber is attached to bridge between the first innersurface web and the second inner surface web.

The outer surface web is therefore neither cut nor widened, andtransported in open width while tension in the length direction is keptapplied. The outer surface web thus has a resistance against contractionof the elastic member inserted between the self and the inner surfaceweb. It is thus possible to avoid a problem attributed to the occurrenceof wrinkles and arising when the absorber is attached to bridge betweenthe convex portions of the first inner surface web and the second innersurface web.

In addition, because the intermediate portion of the absorber can becovered with the seamless outer surface web, the visual quality can beimproved.

The third and fourth manufacturing methods may be preferably configuredto further include a step of shifting the cut first inner surface weband second inner surface web in the length direction so that concaveportions of the respective webs oppose each other.

By shifting the cut first inner surface web and second inner surface webin the length direction so that the convex portions of the respectivewebs oppose each other in this manner, the absorber can be attached tobridge between the convex portions of both the first elastic laminatedbody and the second elastic laminated body. This enables the absorber tobe attached to the convex portions of a large space. The attachment canbe therefore performed in a reliable manner.

In addition, because part of the absorber can be covered with the convexportions of both the first elastic laminated body and the second elasticlaminated body, the wearing article can be approximated to underpants inshape. The visual quality can be therefore improved, which can in turnincrease the commercial value of the wearing article.

The first through fourth manufacturing methods may be preferablyconfigured in such a manner that the elastic member includes a waistelastic member, a body-fitting elastic member, and a leg peripheralelastic member, and that the leg peripheral elastic member is in a statewhere the leg peripheral elastic member is provided in a linear state ora curved line state in a width direction or in a state having the bothstates.

When configured in this manner, it is possible to prevent the wearingarticle put on a wearer from drooping down by the waist elastic member,while the wearing article can be fit to the body by the body-fittingelastic member and adhesion to the leg portions can be enhanced by theleg peripheral elastic member.

It may be preferable that the first through fourth manufacturing methodsfurther include a step of side-sealing both side portions of the firstweb and the second web or both side portions of the first elasticlaminated body and the second elastic laminated body while the absorberis in a folded state.

By side-sealing the both side portions of the first web and the secondweb or the both side portions of the first elastic laminated body andthe second elastic laminated body while the absorber is in a foldedstate, a wearing article of an underpants type can be obtained.

It may be preferable that the first through fourth manufacturing methodsfurther include a step of forming leg hole portions.

As this invention may be embodied in several forms without departingfrom the spirit of essential characteristics thereof, the presentembodiment is therefore illustrative and not restrictive, since thescope of the invention is defined by the appended claims rather than bythe description preceding them, and all changes that fall within metesand bounds of the claims, or equivalence of such metes and bounds aretherefore intended to embraced by the claims.

What is claimed is:
 1. A method for manufacturing a disposable wearingarticle, comprising the steps of: cutting an outer surface web in alength direction of the outer surface web to form a first outer surfaceweb having a constant width in a width direction of the first outersurface web and a second outer surface web having a constant width in awidth direction of the second outer surface web; spacing the first outersurface web and the second outer surface web from each other; cutting aninner surface web in a length direction of the inner surface web to forma first inner surface web and a second inner surface web; spacing thefirst inner surface web and the second inner surface web from eachother; manufacturing a first elastic laminated body by laminating thefirst outer surface web to the first inner surface web so as to define afirst end portion on the first outer surface web, the first end portionprotruding outwardly beyond a side edge of the first inner surface webin a width direction of the first elastic laminated body, while placinga first body-fitting elastic member in an extended state in a web lengthdirection between the first outer surface web and the first innersurface web after the first outer surface web and the first innersurface web have been separated respectively from the second outersurface web and the second inner surface web; manufacturing a secondelastic laminated body by laminating the second outer surface web to thesecond inner surface web so as to define a second end portion on thesecond outer surface web, the second end portion protruding outwardlybeyond a side edge of the second inner surface web in a width directionof the second elastic laminated body, while placing a secondbody-fitting elastic member in an extended state in a web lengthdirection between the second outer surface web and the second innersurface web after the second outer surface web and the second innersurface web have been separated respectively from the first outersurface web and the first inner surface web; attaching an absorber tothe first elastic laminated body and the second elastic laminated bodywhich are spaced from each other; placing a first waist elastic memberupon the first end portion and a second waist elastic member upon thesecond end portion; and folding the first end portion inward to therebyenclose the first waist elastic member therein and folding the secondend portion inward to thereby enclose the second waist elastic membertherein after the step of manufacturing the first elastic laminated bodyand the second elastic laminated body.
 2. The method for manufacturing adisposable wearing article according to claim 1, wherein: in the stepsof cutting the inner surface web, the inner surface web is cut tothereby have concave portions and convex portions alternately.
 3. Themethod for manufacturing a disposable wearing article according to claim2, further comprising: a step of shifting the first inner surface weband the second inner surface web in the length direction so that concaveportions of the respective webs oppose each other.
 4. The method formanufacturing a disposable wearing article according to claim 1, furthercomprising: a step of forming a leg hole portion by cutting out thefirst and second outer surface webs after the steps of manufacturing thefirst elastic laminated body and the second elastic laminated body. 5.The method for manufacturing a disposable wearing article according toclaim 1, further comprising a step of side-sealing both side portions ofthe first elastic laminated body and the second elastic laminated bodywhile the absorber is in a folded state.
 6. A method for manufacturing adisposable wearing article, comprising the steps of: cutting an innersurface web in a length direction of the inner surface web into a firstinner surface web and a second inner surface web; spacing the firstinner surface web and the second inner surface web from each other;manufacturing a first elastic laminated body and a second elasticlaminated body by laminating a single outer surface web over the firstinner surface web and the second inner surface web, the first elasticlaminated body and the second elastic laminated body being connected viathe single outer surface web, while placing a first body-fitting elasticmember in an extended state in a web length direction between the singleouter surface web and the first inner surface web and placing a secondbody-fitting elastic member in an extended state in a web lengthdirection between the single outer web and the second inner surface webafter spacing the first inner surface web and the second inner surfaceweb from each other; and forming a first portion where a contractiveforce of the first body-fitting elastic member is lessened in the firstelastic laminated body after the step of manufacturing the first elasticlaminated body and the second elastic laminated body; forming a secondportion where a contractive force of the second body-fitting elasticmember is lessened in the second elastic laminated body, the firstportion and the second portion being arranged in a width direction ofthe single outer surface web after the step of manufacturing the firstelastic laminated body and the second elastic laminated body; attachingan absorber to the first inner surface web at the first portion and thesecond inner surface web at the second portion which are spaced fromother, and attaching the absorber to the single outer surface webbetween the first portion and the second portion while tension in a weblength direction is kept applied to the single outer surface web; andforming a leg hole portion by cutting out the single outer surface webafter the step of manufacturing the first elastic laminated body and thesecond elastic laminated body, wherein: in the step of manufacturing thefirst elastic laminated body and the second elastic laminated body, thesingle outer surface web is laminated over the first inner surface weband the second inner surface web so as to define a first end portion anda second end portion on the single outer surface web protrudingoutwardly beyond a side edge of the first inner surface web and a sideedge of the second inner surface web in a width direction of the singleouter surface web respectively, the method further comprising: placing afirst waist elastic member upon the first end portion and a second waistelastic member upon the second end portion; and folding the first endportion inward to thereby enclose the first waist elastic member thereinand folding the second end portion inward to thereby enclose the secondwaist elastic member therein.
 7. The method for manufacturing adisposable wearing article according to claim 6, wherein: in the stepsof cutting the inner surface web, the inner surface web is cut tothereby have concave portions and convex portions alternately.
 8. Themethod for manufacturing a disposable wearing article according to claim7, further comprising: a step of shifting the first inner surface weband the second inner surface web in the length direction so that concaveportions of the respective webs oppose each other.
 9. The method formanufacturing a disposable wearing article according to claim 6,wherein: in the step of cutting the inner surface web, the inner surfaceweb is cut to form the first inner surface web having a constant widthin a width direction and the second inner surface web having a constantwidth in a width direction.
 10. The method for manufacturing adisposable wearing article according to claim 6, wherein: the elasticmember includes a waist elastic member, a body-fitting elastic member,and a leg peripheral elastic member, and the leg peripheral elasticmember is in a state where the leg peripheral elastic member is providedinn a linear state or a curved line state in a width direction of thewearing article or in a state having the both states.
 11. The method formanufacturing a disposable wearing article according to claim 6, furthercomprising: a step of side-sealing both side portions of the firstelastic laminated body and the second elastic laminated body while theabsorber is in a folded state.
 12. A method for manufacturing adisposable wearing article, comprising the steps of: manufacturing anelastic laminated body by laminating an inner surface web and an outersurface web while placing a body-fitting elastic member in an extendedstate in a web length direction between the inner surface web and theouter surface web, the outer surface web having a greater width than theinner surface web, and a first end portion and a second end portionprotruding outwardly beyond a first side edge and a second side edge ofthe inner surface web in a width direction of the elastic laminated bodyrespectively; cutting the elastic laminated body in a length directionof the elastic laminated body into a first elastic laminated body havinga constant width in a width direction of the first elastic laminatedbody and a second elastic laminated body having a constant width in awidth direction of the second elastic laminated body; attaching anabsorber to the first elastic laminated body and the second elasticlaminated body; placing a first waist elastic member upon the first endportion and a second waist elastic member upon the second end portion;folding the first end portion inward to thereby enclose the first waistelastic member therein and folding the second end portion inward tothereby enclose the second waist elastic member therein after the stepof manufacturing the elastic laminated body; and forming a leg holeportion by cutting out the first elastic laminated body and the secondelastic laminated body.
 13. The method for manufacturing a disposablewearing article according to claim 12, wherein: the first elasticlaminated body and the second elastic laminated body are cut out afterthe step of attaching the absorber to the first elastic laminated bodyand the second elastic laminated body.